Input validation error in Discourse - CVE-2022-24824
Published: April 14, 2022 / Updated: July 1, 2026
Vulnerability identifier: #VU136062
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-24824
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a partial denial of service.
The vulnerability exists due to improper input validation in the request handling and caching logic when handling a maliciously formed request. A remote attacker can send a specially crafted request to cause a partial denial of service.
Anonymous users may be served the crawler view of the site instead of the normal HTML page.
Affected software
Discourse
How to mitigate CVE-2022-24824
Install security update from vendor's website.
Discourse - addressed in versions 2.8.3, 2.9.0 beta4